The Kink Distortion in Quasi-One-Dimensional Conjugated Polymer with a Side Radical

作     者：Zhan J, LI~(1.2), H. Q. LIN~(2,3), Z. AN~1 and K. L. YAO~4 1 Departrnent of Physics, Huazhong University of Science and Technology, Wuhan, 430074, China 2 Physics Department, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong 3 The Material Science and Technology Research Center of CUHK, Hong Kong 4 The National Lab of Laser Technology, HUST, 430074, Wuhan, China 

会议日期：2000年

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

关 键 词：Peierls distortion solitonlike state side radical 

摘      要：Based on a theoretical model for quasi-one-dimensional polymer. the kink distortion in a π-conjugated carbon chain with a single radical. which contains an unpaired electron. is investigated. when the hopping integral between the main chain and the side radical is larger than it critical wahie. there exists a transition form the Peierls dimerization to a solitonlike Structure along the main chain. In addition. it is found that the up spin density at the dangling site has been (?)ransferred to the main chain. while the down spln density of the main chain is transferred to the side radieal due to the hopping mediated interaction between the main chain and side radical.